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Shearer included Nunez in his team of the week and praised the player following the Newcastle win.
Liverpool celebrated a 2-1 win over the Magpies on Sunday after being 1-0 down with 10 men.
During the game, Virgil van Dijk was sent off due to his challenge on Alexander Isak.
Towards the end of the game, Nunez formed a double at the 81st and 90+3rd minute and gave the Reds a comeback win.
“Those two goals could be a turning point in his Liverpool career. Absolutely clinical,” wrote Shearer on his Premier League website column.